In your first comment you said "the world's Lithium". Now you're saying "US produces". That's a massive difference. US production rounds to about 0% of the world's production. The vast majority is done in China, Chile and Australia.
"it would take the <world's> entire supply of Lithium produced per year, just to allow for half of new cars <sold in the US> alone be electric"
"It is estimated that the <U.S. alone will need 500,000 metric tons per year> of unrefined lithium by 2034 just to power EVs... <current global production> of lithium in 2020 was about 440,000 metric tons..."
I guess you're saying that Chinese cars take < 1/8 of the Lithium that American cars would? Which implies that your source thinks the average American car will need an F-150 Lightning sized battery?